Improvement in type-casting machines



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f www@ my 27g/z@ PATENTE JAN 241871 y vjim WMW/ zesse 4 em @Y6 j IWitnesses u Inventum The Schedule referred'to `in these Letters Patent`and making of the same.

11o/all fir-'Icom vit may concern:

Beit known that I, WiLLrAM 'W. `DUNN,ot the city-mul' county of SunFranciscqState of California, have invented certain new and usefulImprove.

jznents "in linchinesfor lMaking Typeg and I do hereby declare that thefollowing is a full and exact descriptionof the saine, reference beinghad to the accompanying drawing and to the letters marked thereon. 4

'My'inrention relates to that class oi' machines for casting type whichis provided with devices for breaking olf the superfluous metal anddressing the type, a,ndf consists` in certain details of constructionwhich will, hereinafter .more fully appear.

In the annexed drawingliigure 1, `sheet 1, is a perspective -view oi' anmchine embodying my invention; r

Figures 2, 3,.,4,5, ando, sheet 2, and

Figures l, 8, 9, and 10, shcetl, are details. i Lilie letters refer-:tolike parts irreach ofthe figures. .Y

The melting-pot u. is heated by a furnace, not shown.in-thefdrawing,andv v i The'cavity b is kept continually supplied with molten metal. l v

The plunger c hasaiverticalreciprocating inotion imparted to it bysuitable machinery, not shown.

1 l This plunger is shown in its highest position in iig.

2', ,sheet` 2, in which position the cylinder or well rl grill ll withmetal through the passa-gcc. Thefectioualarea of thelpluuger is such,and its lengt-h "cf `stroke `so adjusted, that iudcscending it 'willdisplace -justenough metalto formone type, and force itout throughthepassage f up' through passage g, raising the cylindrical ,valve handdischarging through the nipple t to the carrieror spider j andthe mold.v Y. r

v--\Vhcn,the plunger chegins-its upward stroke thc valve h will-beimmediately forced downward by the spring o closing the passage tothe nipple.` Increasing the length-ot' the-.strokryof the plunger willcompensate.for4 leakage around orimperiect illmg-'of-the plunger' orvalve. f f ",'To prevent thc excessive heating `oihthomold a screcl-r,1.', is provided, bctween'which audvthe. ineltf ing-pot :urair passageshouldi he made. l l

lhe'nioldonmntrix consist-s of three picccs, lV mn,

2 and 3, all orv cil-her nl'- whichcan hezreadilyfrcniovedor-cxclnuigedat will inordor to molddficrent forms-of type. g l Y y. I lffiheffrcc'i'ignlu-r sp: 'c'rnrlormcd by the pieces l and nz, i closed at its outereudby the rocking piece ledig. 2, @upon .whichthc matrix 'for the letterorl char- Sterf is loi-mcd;- and a scparate-V rocking piece, n, shnldhrprovided' for cach character or lettci;

The molten metal flowing from the nipple fills not only the mold out theopening in` passage 78, fig. 4, in Ythe end of the arm ot the carrier orlspider j, and

forrns between the spider and Athe typen gate of 111176132171.

'v lAs' soon as the casting is thus performed the vmold is opened andthe type released'by means o f the f'ollowing devices, the motions ofwhicliare'derived from the eccentric q', fig. l;

Y First, the .upper part L of the'inold is raised up out of the wayandreturned to itspositiou by means of the hinged plate 1', to which isattache-d the swivelbox nut s, tig .1, in which is4 secured by ineansofthe `drop-catch t, the h orizontalarm u.

The arlnu is secured by means of the sliding' arm fi: and screw 'w to avertical rod a: therod :l: is -con nected by means of the swivel-piu ytothecam c, fig. 1.

motion throughthe intervening mechanism to the upper piece l of themold, said calu, .d being hinged at l, and receiving'its' motioufromapin, 2, on the extremity 'of the rock-shaft arm 3, g. 4.

able lever 10 act-ing` onf-an. arm, 11, attached to thespring 12."

vBoth the rock-shaft and the lever 1Q areoperated by the sliding-camplate, 13, g.,1, and the cam-plate 1 3 is iinpelled by the rod 14,connected with the adjustable rock-shaft arm' 15 of shaft 4.

As soon as the type is released from themold, it is carried lover byythe spiderj anddeposited on the type lan'dingor cutter-plate 16,grasped` or held in a 'l proper position by the foot 17 and forcedthrough between cutter 18 and breaker 30, and cutter-platcl .'hy t-hetype-slice 19 onto the cutter hed-plate 20,

lg.7. L The required i-'eciprocating, inotioiris-imparted to thc' sliceby means of theguide-platel 21,. counectv ing-rod 22, roclishaft 23,arms 2-1`and 25, 'con'` necting-rod 26 lever 27, connecting-rml 28,'andcrank-29. l i A y: f"

.,.lhe.typclai1ding or-cutter-plate 16 is rigidly sel cured to thebed-plate 20, and is'- providedtvith l'L- agonal cutter 3l, that planeand trim or sha1-fe the underside `of the. type as it passes overtheni,wl1i le the cutter-*18trirnsthc top. v

Breaker 30 separates the gate-from the. type; thc gate being stillretained iu the spider-arm is carried 1 )ating the throw of the lever40.

secured to a angc on theA shaftl 33, consequently the shaft 33 isrotated one-sixth of arevolution each time that a type is cast by meansof the ratchet- .wheel 34, stop-wheel 35, stop-pawl 36, and pawl-armsand pawls 37 and 38, connecting-rod 39, lever 40, and

eccentric v41.

The"rod of eccentric v4l is Aconnected to lever 40 b means of'a )insecured in a slot 4.2 in the le'ver.

.l w A .s i

rlhe slotted connection 1s for the purpose of regulhe plate or mold-seat42, carrying the matrix and -the machinery connected'with the eccentricq', is

hinged and secured and adjusted by the screws 43 and set orbinding-screws 45- to a vertical plate drmly attached to or forming apart o f the moving or sliding bed 44.

-The sliding bed 44 is forced toward the meltingpot by the cam 45 androller 63, and toward the cam 45 by a suitable spring; said roller' andspring are so constructed and adjusted that whe" the moldis being filledthe face ofv the mold will press the arm of the carrier tight againstthe nipple and prevent leakage of metal, and afterthe mold is filledseparate the .metal from the end of the nipple by moving both thecarrier and the mold away from the nipple. .ForI the better adjustmentoi' the motion of the moving-bed a set-nut, 46, is` provided.

For the purpose of imparting the required corresponding motion to thespider an end-long motion is given tothe shaft 33 by means of thecollars 4-7 and 48 betweenwhich works anarm, '49, rigidly attached tothe .moving-bed, figs. 10 and 1.

'.l`o`the moving-bed is also attached another stout arm, 50, at=theextremityof which is a set-screw, 5l, that provides a support fortheextremity of the arms of the carrier during the operation of the punch32 in driving out the gates, fig.

The foot 17 `is operated by means' of the cam 52,l

the lever 53, rod- 54, `lever 55,-.spriug 56, and adj-usted by means 'ofa set-screw proiecting through the plate 57.

The cutter-bed plate 20 is position to the top of the frame 58.

Frame 58 is secured to the principal frame of the machine by theset-screws 59, and adjusting-screws 60, 'andslot 62, in such a manner asto be readily adjusted in regard to height, and according to thethickness of the type.

The box-nut s, iig. 1,is swiveled for the Vpurpose of obtaining a directand even pressure for causing the face or parts of the-mold to comesquarely togoth er.

' lThe entier 18 is secured to the holder 64and is raised or lowered toconform to typeoffdiii'erent thickness by the slidingr of the holders onthe pillar or rodG, adjusted and .secured by the screws 66,' thc .pitchof that part of screw 66 .that works in the top` plate of thevholder-being dii'crent from the pitchl of the part working in thepillar or rod (i5.

The melting-pot may be leveled, tilted, oradj usted by means of theadjusting-screws 67 and the holdingdown screws 6 8.

The .required horizontal motion is imparted Ato thc punch or needle 32bythe eccentric 69, eccentric-rod 70, cani 71, pin 7 2, guide-frame 73,sliding-plate 74, and clamp 75,'ligj5.

The office of thc foot- 17 is very important in holding the. 'typefirmly down -ou the type-landing, and preventing it from being turned ortilted over by the cutter 18 or being thrown out of place by .theleverage of the gate over the breakers 30.

-The operation of the slice yin bearing uniformly on secured in aninclined` man the type throughout its length and-forcing said typelaterally thnough the cutter, prevents the possibilit;`

of bending oninjuring said type during` theftrimming,

'to all the'moving parts.

The. holes or recess 78 in the extremities of the arms of the carrier,or spider'j, are tapered, having Y their largest end toward the mold.

These holes are thus tapered in order to prevent: the gate .from beingdrawn through them toward the nipple, and -thus breaking the gate off ofthe type while the type is still in the mold.

The screen 7a is an important de vice, for the reason that without itthe lnold would become so heated by the radiation from the melting-potthat the metal wpnld not have time to chill in them unless the castingwas proceeded with much more slowly than is necessary with my invention.s Y

'.lhe adjusting-screws 67am particularly required to adjust the height of the nipple to the center of `the holes 7S, in the carrier j,.aiter themeltingpot has become expanded by heat, of course, the screws 67 maybeplaced in the forward lugs `of the melt` ing-pot it' desired, or wedges'may be used in their stead. y

rlhe nipple i, foot 17, and punch 32, are equidistant from each otherand from the center line of the shaft 33, their distancev from the`center line of the shaft being just equal to the distance of the centerof is, if only three arms are used'.- the shaft should make one-thirdci' a revolution for each type that is cast; or, if nine arms areused,.one-untl 1 of a revvhinging, securing, or 'adjusting the mold-seat42 to a v bed by the screws 43 and 45.

' Neither do Iv claim, broadly, operating the machin ery connected withthc casting of type by a revolving shaft, nor the employment of the cam45 and roller (i3 for the purpose of causing the matrix or mold toapproach and recedc from `the nipple i; but

lVhat .I do claim asnewin machines. for making type, and desire tosecure by Letters-Patent, is-' l. The eccentrics q', and rod q, arm 5,rock-shaft fi, adjustable arm 15, rod 14, cam-plate 13rock shaft G, arms7 and S, setfserews 9, adjustable lever 10, and spring l2, combined andarranged substantially as described, and for the purpose set forth.

2. lh'e cutter 18 in combination with the holder 64, pillar 65, andscrew 66. A The punch 32 in combination withthe arm 50 and secscrew 51,substantially as and for the pur- `pose set forth.

4. lhearrangeinent of the eccentric 69, rod. 70, cam 71, piu 7 2,'guide-frame 7 3, sliding-plate 7 4, and clamp .75, when employed inconnection. with the punch 32, as described.

5. The presser-foot 17, in combination with lever In testimony whereof Ihavehereunto set my hand 55, having the adjusting-plate 57 andspring'56, as `a.nd seal. l shown and described. l

6. The combination of the frame 58, the cutter-bed plate 20, cutter18,bi'ea.ker 307 and cutter-plate or Witnesses: lgype landing 16, withthe foot 17 and type-Slicer 19, CALEB T. Fn', when the parts arearranged as described for thepur- O. W; M. SMITH. pose setrforth.

, W. W. DUNN. [ns-1

